№ 3 / 2017 / 72-78

VEGETATIVE BALANCE OF THE ORGANISM AND CHEMOREACTIVE PROPERTIES OF CARDIORESPIRATORY SYSTEM AT CLIMBERS

Author: Divert V.E.¹, Vergunov E.G.², Balioz N.V.³, Kushnir K.Yu.⁴, Kulikov V.Yu.⁵, Krivishchekov S.G.⁶

Abstract

Indexes of variability of heart rhythm in ortotest (by Riftin A.N.) and characteristics of chemoreflectory breath and heart response in hypercapnic and hypoxic tests at members of climbers team before and after monthly stay in high mountains (more than 3500) have been investigated. It is shown that monthly stay in high mountains does not change magnitude of the basic indexes of heart and vessels reactivity in ortotest. It has been determined that climbers are distinguished by the enhanced ventilatory reaction to hypercapnia and significant one to hypoxia at the relaxed pulse reaction to both influences. The inverse relationship between individual sensitivity of hypercapnic ventilatory reaction and level of parasympathetic excitatory system activity has been revealed in surveyed people group. Thereat sensitivity of pulse reaction to hypoxia is directly proportional to its individual level of activity. The monthly exposition of persons in high mountains even more enhances the chemoreactive lung ventilation response to hypercapnia, practically without any change in heart reaction. The relations of brain cortical activity with initial individual heart frequency and with adaptive hypoxic ventilatory sensitivity is shown.

Key words

altitude, autonomic nervous system, chemoreception, electroencephalography, external respiration, pulse

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About Authors (Correspondence):

Divert V.E. – doctor of biological sciences, leading researcher, e-mail: divert@physiol.ru

Full Text

snmzh_3-2017_divert_i_dr.pdf

Received: 28/06/2017

Accepted: 28/06/2017